398152380 has 48 divisors (see below), whose sum is σ = 1130540544. Its totient is φ = 104677440.

The previous prime is 398152373. The next prime is 398152399. The reversal of 398152380 is 83251893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42472 + ... + 50991.

It is an arithmetic number, because the mean of its divisors is an integer number (23552928).

Almost surely, 2^398152380 is an apocalyptic number.

398152380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398152380 is an abundant number, since it is smaller than the sum of its proper divisors (732388164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398152380 is a wasteful number, since it uses less digits than its factorization.

398152380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93546 (or 93544 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 398152380 is about 19953.7560373981. The cubic root of 398152380 is about 735.6701001611.

It can be divided in two parts, 39815 and 2380, that added together give a triangular number (42195 = T₂₉₀).

The spelling of 398152380 in words is "three hundred ninety-eight million, one hundred fifty-two thousand, three hundred eighty".